Cheapest return flights from Istanbul to Kathmandu in September from $502

Best time to book flights for Istanbul (IST) to Kathmandu (KTM) flights at AirHint

AirHint found the following cheapest return flights from Istanbul (IST) to Kathmandu (KTM) in September 2025 (see full year).

Return flights

08 Sep - 22 Sep Air Arabia
09 Sep - 23 Sep Air Arabia
07 Sep - 18 Sep Air Arabia
22 Sep - 26 Sep AJet
21 Sep - 05 Oct AJet
27 Sep - 05 Oct AJet
29 Sep - 12 Oct Pegasus Airlines
20 Sep - 06 Oct AJet
18 Sep - 25 Sep Air Arabia
20 Sep - 05 Oct AJet
26 Sep - 12 Oct Pegasus Airlines
19 Sep - 05 Oct Pegasus Airlines
27 Sep - 13 Oct Air Arabia
27 Sep - 12 Oct Air Arabia
07 Sep - 18 Sep Turkish Airlines direct
07 Sep - 23 Sep Turkish Airlines direct
08 Sep - 22 Sep Turkish Airlines direct
18 Sep - 25 Sep Turkish Airlines direct
22 Sep - 26 Sep Turkish Airlines direct
20 Sep - 05 Oct Turkish Airlines direct

Also check the deals for one-way flights from Istanbul to Kathmandu in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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